.side-tab {
    position: fixed;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 15px;
    border-radius: 10px;
    z-index: 100;
    width: 60px;
}

.side-tab-item {
    width: 100%;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.6;
    border: 2px solid transparent;
    color: #929292;
    text-align: center;
    font-size: 12px;
}

.side-tab-item:hover {
    opacity: 1;
    transform: scale(1.1);
}

.side-tab-item.active {
    opacity: 1;
    border: none;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0.05) 100%);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.4), inset 0 0 10px rgba(255, 255, 255, 0.2);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

.caption {
    position: fixed;
    left: 50%;
    top: 80%;
    transform: translate(-50%, -50%);
    max-width: 600px;
    padding: 30px;
    border-radius: 15px;
    color: #b6b6b6;
    text-align: center;
    font-size: small;
    opacity: 0;
    animation: fadeOut 0.5s ease forwards;
}

.caption.show {
    animation: fadeIn 2.5s ease-in forwards;
}

.back-button {
    position: fixed;
    left: 20px;
    top: 20px;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    color: #b6b6b6;
    font-size: 14px;
    opacity: 1;
    transition: opacity 0.3s ease;
    z-index: 100;
}

.hide {
    display: none;
}

.title-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.title-decoration {
    width: 100px;
    height: 20px;
    opacity: 1;
    transition: opacity 1s ease-in;
}

.title-decoration.right {
    transform: scaleX(-1);
}

.caption h2 {
    font-size: 24px;
    font-weight: bold;
    margin: 0;
}

.caption p {
    font-size: 16px;
    line-height: 1.6;
    margin: 0;
}